/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.alibaba.apiopenplatform.service.gateway.client;

import java.net.InetSocketAddress;
import java.net.Socket;

public abstract class GatewayClient {

    public void close() {

    }

    protected String getAPIGEndpoint(String region) {
        String internalEndpoint = String.format("apig-vpc.%s.aliyuncs.com", region);
        String publicEndpoint = String.format("apig.%s.aliyuncs.com", region);

        // 优先尝试内网endpoint
        try (Socket socket = new Socket()) {
            socket.connect(new InetSocketAddress(internalEndpoint, 443), 1000); // 1秒超时
            return internalEndpoint;
        } catch (Exception e) {
            return publicEndpoint;
        }
    }
}
